US8215574B2 - Pulper with a torque motor - Google Patents

Pulper with a torque motor Download PDF

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Publication number
US8215574B2
US8215574B2 US12/845,602 US84560210A US8215574B2 US 8215574 B2 US8215574 B2 US 8215574B2 US 84560210 A US84560210 A US 84560210A US 8215574 B2 US8215574 B2 US 8215574B2
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United States
Prior art keywords
rotor
drive shaft
pulper
output
speed
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US12/845,602
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English (en)
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US20110024534A1 (en
Inventor
Harry Wiljan
Roland Carra
Stefano Bozano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BTA International GmbH
Biotec Sistemi Srl
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BTA International GmbH
Biotec Sistemi Srl
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Application filed by BTA International GmbH, Biotec Sistemi Srl filed Critical BTA International GmbH
Assigned to BTA INTERNATIONAL GMBH, BIOTEC SISTEMI S.R.L. reassignment BTA INTERNATIONAL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CARRA, ROLAND, BOZANO, STEFANO, WILJAN, HARRY
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • D21B1/345—Pulpers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/22—Crushing mills with screw-shaped crushing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/36—Adding fluid, other than for crushing or disintegrating by fluid energy the crushing or disintegrating zone being submerged in liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/18—Drum screens
    • B07B1/20—Stationary drums with moving interior agitators
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/01—Waste products, e.g. sludge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/47—Mixing of ingredients for making paper pulp, e.g. wood fibres or wood pulp
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the invention relates to a pulper and to a working method of same.
  • Pulpers have the task of recycling readily defibratable stock mixtures, one salient application being recycling especially waste products such as, for example, waste paper and similar waste, including biological waste by separating the recyclable from the non-recyclable components.
  • One such pulper usually comprises a tank housing a rotor into which the feedstock to be recycled is filled together with a liquid, usually water.
  • a rotor into which the feedstock to be recycled is filled together with a liquid, usually water.
  • Powered rotation of the rotor creates strong flow forces defibrating the solids, lending themselves thereto along with a shortening of the defibers, resulting in part thereof and other substances contained in the stock mixture entering into solution.
  • this mainly involves defibratation no special mention is made as to the accompanying size-reduction and dissolution in the present context, but it is understood to be included.
  • the defibrated components of the feedstock form together with the liquid a suspension which is drawn off from the pulper e.g. through a screen.
  • German patent DE 31 49 1305 essentially comprising a pulper tank with an electrically powered bottom rotor. It is also known from prior art to power the rotor hydraulically by supplying the rotational torque of an induction motor via a hydraulic pump/motor to the rotor, in addition to which, use is made of rectangular gearing powered with the aid of the induction motor.
  • geared power drives have the disadvantage of being a very heavy lop-sided weight load, along with numerous bearings and couplings involved, each constituing a weak point mechanically. On top of this, such motorized systems are noisy. This is why in prior art clustered motors, usually involving four motors, are proposed.
  • each of the interconnections of the motors involves friction losses, apart from the drawback of the mechanical weak points, for instance, of the bearings, still not being solved despite the clustered approach.
  • the drive train comprises an electric motor followed by traction gearing, for example a belt drive.
  • traction gearing for example a belt drive.
  • the object of the invention in overcoming these drawbacks is to propose a suitable assembly for driving the rotor of a pulper. This object is achieved by a pulper as set forth in claim 1 and a pulper method as set forth in claim 3 .
  • the pulper in accordance with the invention is characterized in that the drive assembly now comprises a three-phase synchronous motor designed as a multipole synchronous motor, comprising to advantage 12 to 64 poles running at a speed ranging from 0 to 1000 rpm, where necessary, reversed.
  • the motor is connected to the output of a frequency inverter controlled by a controller and the output of the drive shaft is directly transmitted to the rotor shaft without any gearing inbetween.
  • the former For the active transmission between the output of the drive shaft and the rotor shaft, the former is provided with a drive shaft at the motor end directly coupled to the latter to thus now make it possible to use the rotor shaft of the pulper as the shaft driving the motor, in other words, the output of the drive shaft of the motor already constitutes the rotor shaft.
  • This configuration of the pulper in accordance with the invention has salient advantages over the features of conventional pulper devices. For, now, by using a synchronous motor in conjunction with an upstream frequency inverter the torque made available at the rotor of the pulper can be maximized over the full speed range, facilitating the starting phase in also enabling the device to be started under load. It is namely so, that in slow rotation of the rotor the pulp stock mixtures tend towards an internal no-flow condition which can cement or plug the rotor and its vanes solid. It is particularly advantageous to start the rotor as a function of the frequency with direct rotor drive by adapting to the structural viscosity of the pulp subsequent to such a resting phase. The torque in starting the rotor is likewise elevated by the increase in viscosity as a requirement which the invention is able to satisfy particularly suitably.
  • connection of the synchronous motor to the direct coupling of the drive train at the pulper rotor now makes it possible furthermore for the pulper to respond to changing operating conditions near instantly in adapting the drive train to the change in the operating conditions. This is because the drive train has a low moment of inertia and by means of the controller the speed and/or torque can be altered very simply.
  • the gist of the invention is to couple a variable-speed synchronous motor directly, i.e. without gearing and without machine-powered components, to a rotor of a pulper. Whilst maintaining a maximized torque the speed can now be adapted to the operating conditions or also the torque tweaked to comply therewith.
  • means for sensing the load current as well as means for sensing rotation of the drive shaft of the synchronous motor may be provided, to the outputs of which the controller is connected to enable it to instantly react to a change in the operating conditions.
  • the current consumption increases as sensed by the controller, enabling a motor parameter to be tweaked, for example, changing the speed of the drive shaft to agree with the change in the operating condition.
  • the power rating of the motor ranges from 10 to 500 kW.
  • the object of the method of the invention is achieved by a method for operating a pulper as described above in which, starting with the rotor stationary, the speed of the synchronous motor is increased to a predefined target rpm by making use of a predefined load current limit with a substantially constant motor torque, whereby any tendency of the drive shaft to become plugged automatically prompts a reversal in the direction of rotation of the drive shaft for a predefined period of time or speed within the load current limit before being returned to the forwards speed. Since this can happen instantly on sensing an increase in the load current, because of the reduced moment of inertia, any risk of the pulper becoming plugged is now effectively diminished or prevented.
  • Enabling the rotor to be reversed with the aid of the selected torque motor is an advantage in handling the feedstock of the pulper by speeding up solubilizing the more problematic defibratable stock mixtures.
  • the speed is automatically reduced when a predefined load current limit is exceeded and automatically returned its target value once the overload situation has been compensated.
  • the motor can be activated as predefined in response to certain operating conditions to prevent, for one thing, the rotor shaft from becoming plugged and, for another, the motor from being overloaded. More particularly, it may prove necessary in application of the pulper in accordance with the invention in a process chain to regulate its throughput by maintaining it constant, for example. For this purpose, parameters such as weight, volume or moisture content of the feedstock can be sensed for open or closed loop control of the speed of the synchronous motor.
  • a power feeder assigned to cover the full speed range of the synchronous motor is controlled as a function of the current consumption of the synchronous motor.
  • FIG. 1 is a diagrammtic view of a pulper including a torque motor and
  • FIG. 2 is a magnified detail of how the pulper rotor is connected to the torque motor.
  • FIG. 1 there is illustrated the pulper identified in general by the reference numeral 10 .
  • a pulper rotor 20 Housed in the cylindrical pulper casing 12 mounted centrally therein is a pulper rotor 20 , bottomed by a screen 22 passing only a substance well defibrated and solubilized.
  • the rotor 20 is powered by means of a three-phase synchronous motor, the motor casing 14 of which tops the pulper casing 12 centrally to which it is flanged 19 (see FIG. 2 ).
  • the pulper is bottomed by outfeeds for removing the pulper content.
  • FIG. 2 there is illustrated in a magnified detail how the torque motor is flanged to the pulper casing by means of flange 19 .
  • the stator 16 and rotor 15 of the motor are connected to the shaft of the pulper rotor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Paper (AREA)
  • Control Of Ac Motors In General (AREA)
  • Crushing And Grinding (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Stepping Motors (AREA)
  • Control Of Multiple Motors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
US12/845,602 2009-07-29 2010-07-28 Pulper with a torque motor Active 2030-11-12 US8215574B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009035247.3 2009-07-29
DE102009035247A DE102009035247A1 (de) 2009-07-29 2009-07-29 Pulper mit Torque-Motor
DE102009035247 2009-07-29

Publications (2)

Publication Number Publication Date
US20110024534A1 US20110024534A1 (en) 2011-02-03
US8215574B2 true US8215574B2 (en) 2012-07-10

Family

ID=42782137

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/845,602 Active 2030-11-12 US8215574B2 (en) 2009-07-29 2010-07-28 Pulper with a torque motor

Country Status (15)

Country Link
US (1) US8215574B2 (ja)
EP (1) EP2280116B1 (ja)
JP (1) JP5794769B2 (ja)
KR (1) KR101738684B1 (ja)
CN (1) CN101988276B (ja)
AT (1) ATE549453T1 (ja)
BR (1) BRPI1002350A2 (ja)
CA (1) CA2710975C (ja)
DE (1) DE102009035247A1 (ja)
DK (1) DK2280116T3 (ja)
ES (1) ES2384437T3 (ja)
HK (1) HK1152980A1 (ja)
PL (1) PL2280116T3 (ja)
PT (1) PT2280116E (ja)
RU (1) RU2010131399A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
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US10895038B2 (en) * 2017-05-31 2021-01-19 Gpcp Ip Holdings Llc High consistency re-pulping method, apparatus and absorbent products incorporating recycled fiber

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DE102011083667A1 (de) * 2011-09-29 2012-10-11 Siemens Aktiengesellschaft Benetzung von Fasermaterial
JP5870336B2 (ja) * 2012-03-27 2016-02-24 デュプロ精工株式会社 古紙の離解処理装置、古紙再生処理装置及び古紙の離解処理方法
CN102635007B (zh) * 2012-04-10 2014-09-10 衢州图艺工业设计有限公司 一种废纸收储制浆机
CH707651B1 (de) * 2013-02-28 2016-12-30 Dissolvetech Ag Datenträgervernichtungsverfahren und Sammelfahrzeug.
EP2940207A1 (de) 2014-04-28 2015-11-04 Siemens Aktiengesellschaft Vorrichtung zur Aufbereitung von Stoffen
CN104631171B (zh) * 2015-03-02 2016-08-24 济南大学 一种分区式制浆的高效碎浆机
CN105312140A (zh) * 2015-11-08 2016-02-10 蔡旭东 一种餐厨垃圾破碎分类装置
CN105642148B (zh) * 2016-03-18 2017-10-27 吴江市城宇纺织品有限公司 一种纺织用纤维搅拌装置
CN105887541A (zh) * 2016-06-20 2016-08-24 无锡鼎茂机械制造有限公司 一种防震可循环式碎浆机
DE102016013071A1 (de) * 2016-06-28 2017-12-28 Hans-Joachim Boltersdorf Vorrichtung zur Behandlung von Material mit einem Behälter
CN108816442A (zh) * 2018-08-01 2018-11-16 刘清跃 一种建筑工程用破碎机
CN110004754A (zh) * 2019-03-08 2019-07-12 浙江景兴纸业股份有限公司 一种生活用纸的碎浆方法
CN110552222B (zh) * 2019-09-26 2021-03-16 温州市金龙纸业有限公司 一种节能环保的造纸印刷用碎浆设备
CN111235931A (zh) * 2019-12-31 2020-06-05 华邦特西诺采新材料股份有限公司 一种低能耗装饰原纸连续生产工艺及装置
CN111424451B (zh) * 2020-04-10 2022-09-23 郑州磊展科技造纸机械有限公司 用于造纸植物纤维处理的高浓水力碎浆机
CN111962319A (zh) * 2020-08-18 2020-11-20 沁阳市兴华造纸装备有限公司 一种连续式高效碎浆机
CN113183318A (zh) * 2021-03-19 2021-07-30 浙江韧动重工科技有限公司 一种建筑固废资源化处理再利用系统
CN115814689B (zh) * 2023-02-14 2023-05-12 天津北洋百川生物技术有限公司 一种化工原料混合装置
CN117144705B (zh) * 2023-10-27 2024-02-23 德州市纤维检验所 一种纤维素纤维制造设备

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US7168640B2 (en) * 2003-07-23 2007-01-30 Vecoplan Maschinenfabrik Gmbh & Co. Kg Method and apparatus for comminuting waste
US7469850B2 (en) * 2005-08-05 2008-12-30 Vecoplan Maschinenfabrik Gmbh & Co. Kg Comminuting apparatus with three-phase synchronous motor and integrated epicyclic gear stage
US7757983B2 (en) * 2005-12-28 2010-07-20 Vecoplan Ag Comminuting apparatus with a reduced number of bearings

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US4283275A (en) 1979-05-04 1981-08-11 Escher Wyss Gmbh Apparatus for processing waste paper
US7168640B2 (en) * 2003-07-23 2007-01-30 Vecoplan Maschinenfabrik Gmbh & Co. Kg Method and apparatus for comminuting waste
US7469850B2 (en) * 2005-08-05 2008-12-30 Vecoplan Maschinenfabrik Gmbh & Co. Kg Comminuting apparatus with three-phase synchronous motor and integrated epicyclic gear stage
US7757983B2 (en) * 2005-12-28 2010-07-20 Vecoplan Ag Comminuting apparatus with a reduced number of bearings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10895038B2 (en) * 2017-05-31 2021-01-19 Gpcp Ip Holdings Llc High consistency re-pulping method, apparatus and absorbent products incorporating recycled fiber
US11486089B2 (en) 2017-05-31 2022-11-01 Gpcp Ip Holdings Llc High consistency re-pulping method, apparatus and absorbent products incorporating recycled fiber

Also Published As

Publication number Publication date
ES2384437T3 (es) 2012-07-04
EP2280116A1 (de) 2011-02-02
ATE549453T1 (de) 2012-03-15
JP5794769B2 (ja) 2015-10-14
CA2710975A1 (en) 2011-01-29
JP2011042917A (ja) 2011-03-03
DE102009035247A1 (de) 2011-02-03
CN101988276A (zh) 2011-03-23
CN101988276B (zh) 2013-03-13
RU2010131399A (ru) 2012-02-10
EP2280116B1 (de) 2012-03-14
HK1152980A1 (en) 2012-03-16
CA2710975C (en) 2018-03-13
KR20110013271A (ko) 2011-02-09
DK2280116T3 (da) 2012-07-09
BRPI1002350A2 (pt) 2012-05-15
PT2280116E (pt) 2012-06-05
US20110024534A1 (en) 2011-02-03
KR101738684B1 (ko) 2017-05-22
PL2280116T3 (pl) 2012-08-31

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